Wire-drawing mechanism



J. CETNAROWSKI.

WIRE DRAWING MECHANISM.

APPLlCATlON FILED APR. 18. 1919.

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N O N m WITH E55 '1. CETNAROWSKI.

WIRE DRAWING MECHANISM.

APPHCATION FILE!) APR. 18, I919.

Patented Nov. 2, 1920.

3 SHEETS-SHEET 2- INVENTOR WITN ESSES Fl? 17/4 01? J. CETNAROWSKI. WIRE DRAWING MECHANISM.

APPLICATION mu) APR.18, 1919.

1 ,357,54:3. Patented Nov. 2, 1920.

3 SHEETS-SHEET 3.

WITNESSES UNITED STATES JOHN GETNAROWSKI, OF MONESSEN BOROUGH, PENNSYLVANIA.

VI'IRE-DRAVVING MECHANISM.

atinas.

Application filed April 18,

T 0 aZZ whom it wmg concern.

Be it known that I, JOHN CnTNARowsKI, a citizen of the United States, and residing in the borough of Monessen, in the county of IVestmoreland and State of Pennsylvania, have invented or discovered new and useful Improvements in Wire-Drawing Mechanism, of which the following is a specification.

My invention consists in certain new and useful improvements in wire machines wherein the wire is reduced to the desired size by being drawn through a die by the rotation of a winding block upon which the drawn wire is wound up.[

In the use of such machines, the die sometimes becomes so-worn or broken as to deliver oversized or irregularly sized wire to the winding block, and the defect is not discovered until the product is used.

To prevent this diiiiculty, I provide a wire gage through which the drawn wire must pass before being wound on the block but through which imperfectly reduced wire cannot pass, the gage being connected to themeans for applying power to the windingblock in such a manner that the failure of the drawn wire to pass through the gage relieves the power from the winding block, thus stopping the machine when the wire is being improperly drawn.

I also provide a new and improved finger guardmechanism to prevent the worlnnans hand being caught between the wire and the winding block, such guard being retracted out of the way when the winding block is idle.

I also show new and useful improvements in the winding block which facilitates the removal of the drawn and coiled wire therefrom.

Other novel features of construction and arrangement of parts will appear from the following description.

In the accompanying drawings, which are intended to illustrate the principles of my invention without limiting the scope of the same to the construction shown, Figure 1 is-a side elevation of a wire machine to which my invention is applied, said machine being shown in its operative position during the drawing of wire; Fig. 2 is a top plan view of the same; Fig. 3 isa viewsimilar to Fig. 1 but showing the power relieved from the winding block; Fig. 4; is a front end view showing the machine drawing wire; Fig. 5

Specification of Letters IPatent.

Patented Nov. 2, 1920.

1919. "Serial No. 290,914.

is a similar view showing the power relieved from the winding block; Fig. 6 is a detail showin the winding block and its finger guard, the latter being in its inoperative position; Fig. 7 is a detail showing the winding block, the die box, the locking bar and the wire gage; Fig. 8 is a side elevation of the wire gage and its lever; Fig. 9 is a front view of the same, Fig. 10 is a view showing in detail the connection betweenthe wire guide mechanism andthe weighted releasinglever; and F ig. 11 is an enlarged sectional view showing the preferred form of wire gage. Fig. 12 is a detail in elevation of the winding block and its mounting, the forked lever being shown with its" outer end raised and the'block in clutch, and Fig. 13 18 a detail in plan showing the bell crank lever and connecting mechanism.

The following is a detailed description of the drawings.

The wire drawing machine to which my invention is shown applied is of the usual type wherein the wire is drawn through a die by the rotation of the winding block, and in the drawings I have shown, for the sake of'illustration, my present invention applied'to substantially the same machine illustrated in Letters Patent of the United States No. 1,206,092, granted to me on November 28th, 1916, with the safety devices therein described and claimed. I

Said machine is of substantially the fol lowing construction. The frame is composed of a platform A supported by legs 1. 2 is a horizontal driving shaftto which power may be applied by a belt engaging pulley 8. a is abeveled gear on the inner end of said shaft which meshes with the similar gear 5 on thelower end of a vertical shaft 6 whose upper end is reduced and protrudes above the platform A. At the lower end of such reduced portion said shaft 6 is provided with a clutch member 7 which is adapted to engage the clutch blocks 7 on the bottom of the winding block B whose axial bore the reduced upper end of the shaft (3. Thus when the block is lowered the clutch engages and the winding block is power driven, but when the block is raised to disengage the clutch, the winding block is idle on the shaft.

The elevation of the winding block, to render the same idle, is accomplished by the usual forked lever 8 which engages the bot tom of the block oneither side of the clutch and is pivoted at 9 to the machine frame. The one end or tail of the lever 8 is connected by a link 10 to an intermediate point on a transverse lever 11, one of whose ends is pivoted to the machine frame, as at 12, while its other end extends through a vertical slot 13' in one of the frame legs. It is evident that a depression of the tail end of lever 8 will throw the block out of operative connection but when the lever is released, the block will drop back and the clutch engage. l -Vlien the lever 11 is elevated during the normal operation of the machine, it is locked in said position by a shoulder 1% on the locking bar 15 which is loosely pivoted to the machine frame by means of a bolt 16 engaging a transversely disposed slot 17 in said bar. 18 is a helical spring connecting the upper end of said locking barto the front of the machine, thereby tending to draw said bar forwardly and release the lever 11. 19 is alever pivoted at one of its ends to the frame while its other end is provided with a heavy weight 20. Intermediate of its ends said lever 19 is loosely connected to the lever 11, whereby, when the locking bar 15 is disengaged from lever 11,

the weight 20 causes said lever 11 to drop,

throwing out the winding block B. The lever 11 may be manually raised, so as to be engaged by and locked in position by the shoulder 14 of the bar 15, by a hand lever 21 whose one end is pivoted to the frame of the machine and which is loosely connected to the protruding end of the lever 11. 7 (lie the die box having a horizontal. slideway for the die plate 22 which may be fixed in position by set screw 23. The die box is both pivotally and slidably mounted on the frame of the machine by means of a bolt 2.4.- which extends down through a hole in the die box and engages a longitudinal slot 25 in the platform A. Thus when the wire is being drawn through the die by the rotation of the block B, the die box isdrawn toward the winding block along the slot 25. A bent connecting rod 26 has one end pivotally connected to the upper portion of the locking bar 15 while the other end extends up into a curved slot 27 in the die box C, wherebywhen in thenormal operation of the machine the die box is held in proximity to the winding block by the tension of the wire, the locking bar is held in position to hold the lever 11 elevated and the winding block clutch engaged. Should, however, the wire break and the tension on the die released, the helical spring 18 will draw the locking bar and the die box forwardly and throw the winding block into its idle position.

D is the guide for the wire between the feeding reel, not shown, and the die box. Said guide is provided with a relatively large opening 27 through which the wire freely passes from the supply reel. 28 is a face plate mounted on the outer face of guide D and provided with a smaller opening 29 of proper size to permit the unsnarled wire to slide along the die box but to prevent a snarl in said wire to pass through. The upper portion of said plate 28 is provided with a vertical slot 80 engaged by a headed pin 31 on the guide D, so that the plate 28 slides over the face of the guide in obedience to the lateral shift of the wire unwinding from the reel. The guide D is rigidly mounted on a stem 32 which is pivoted, to swing transversely to the longitudinal movement of the wire, on the upper end of a bar 33 which is pivoted between two standards to swing in the plane of the longitudinal movement of the wire. E is a curved lever pivoted intermediate of its ends, in a vertical plane, to. the

bracket 35 on the machine frame. The lower end of said lever is connected by a link 86 with the foot of the bar while the upper end of the curved lever E is pivotally connected to the weighted lever 19. F is a bell crank lever horizontally pivoted at its angle to the frame of the machine and having its rear end connected by a link 37 with the lower end of the locking bar 15 while its front end is connected by a pin and slot connection to a lever 38 whose other end is curved and slides in a vertical guide slot 39 in one of the standards 34. intermediate of its ends said lever 38 is provided with an angular shoulder 40 which is engaged by a notch ll on the foot of the bar 33, so that when a snarl in the wire reaches the guide and the foot of the bar 33 is thrown outwardly, the locking bar 15 is drawn forwardly releasing the lever 11, while the rear end of the curved lever E is depressed, thus disengaging and raising the winding block B.

-2 is a hand lever pivoted to the machine frame at a convenient point within reach of the attending workman, connected by a link with one end of a bell crank lever 44 whose other end is connected by a link 45 to the upper end of a rocking lever 46, pivoted intermediately of its ends to the machineframe and pivotally connected at its lower end to the locking bar 15, so that the workman can quickly stop the machine by throwing the lever 42.

The foregoing describes the machine to which I prefer to apply my present invention which I will now proceed to explain, but it will be understood that the scope of my present invention includes the use thereof in connection with. any type of'machine to which it may be applied.

G is a fork which extends upwardly into the path of the wire between the block B and the die box C so that the wire passes between the prongs of the fork, the opening being of sufficient extent to prevent contact of the wire with the fork. The fork is so mounted that when drawn toward the block B,'the locking bar 15 is disengaged from the lever 11 permitting the weight 20 to throw out the block B. Thus the fork Gr may be mounted on the upper end of the rocking lever 46 whose lower end, as has been explained, is pivotally connected to the lower end of the locking bar 15. H is a wire gage through which the wire passes and which is held by the movement of the wire against the front of the fork G. Said gage may be of any convenient construction provided with a bore through which the properly sized wire will pass freely but in which wire of too large a size will stick so that the fork G will be drawn toward the winding block B, thus releasing the locking bar 15 and throwing out the winding block. In practice, I find that a most satisfactory form of gage can be made by winding a length of wire about the wire being drawn, as shown in the drawings, winding first an inner coil 47, snugly on the wire I, which indicates the wire being drawn by the ma chine, and then reversing and winding an outer coil 48 tightly over the inner coil and forming radially extending ends 49 which bear against the forks of the fork member G, as shown. As long as the die is forming the wire of proper size, the wire I slides freely through the gage H, to the winding block B, but should the die become worn or broken, so as to fail to reduce the wire I to the proper size, the wire will not pass through the gage but will stick in the same and the rotation of the winding block will pull the fork G toward said winding block and throw out the latter, thus stopping the machine before any of the improperly sized wire is wound up on the block.

To prevent the workmans fingers being accidentally caught between the wire I and the winding block B, I provide a sliding guard J which consists in a plate curved to correspond to the curve of the block B and mounted in a recess cut in the inner perimeter of the base ring 50 secured to the platform A. and surrounding the enlarged base 51 of said winding block. The guard is provided with a downwardly extending slot 52 for the passage of the wire from the die to the winding block and suflicient clearance is provided between the block and the guard for the wire coiled on the block. The guard has a depending leg 53 which is secured to an angular bracket 54. mounted on the lever 19, so that when the said lever is raised and the winding block in clutch with the shaf 6, the guard is also raised, as shown in Figs. 1 and 4, but when said lever is depressed and the winding block elevated and unclutched, the guard J is depressed out of the way as shown in Figs. 3 and 5.

To facilitate the removal of the wound wire from the block 13 when the drawing process has been completed, I step four or more pins K in holes in the top of the block near its perimeter, said pins having outward extending heads 55. When the wire is drawn, it is wound up on the block 13. The machine is then stopped and the coiled wire is shoved upwardly off the block B onto the pins K, which are then upstepped to release the coiled wire which may then be carried away and the pins restepped for another operation of the machine.

Although, for the sake of clearness, I have minutely described the embodiment of my invention illustrated in the drawings, I do not limit myself thereby, but claim broadly:

1. In a wire machine, a die, a powerdriven block adapted to draw the wire through the die, a wire gage interposed between said die and block and through which the drawn wire passes, and means whereby when the wire fails to pass through said gage the power is automatically released from said block.

2. In a wire machine, a die, a powerdriven block adapted to draw the wire through the die, means for disconnecting the power from said block, a wire gage interposed between said die and block and through which the drawn wire passes, and means whereby when the wire fails to pass through said gage, said disconnecting means are actuated.

3. In a wire machine, a die, a powerdriven block adapted to draw the wire through the die, means for disconnecting the power from said block, a lever adapted to actuate said disconnecting means, and a wire gage interposed between said die and block and through which the drawn wire passes, said gage bearing on said lever, whereby when the wire fails to pass through said gage said lever is thrown and actuates said disconnecting means.

41:. In a wire machine, a die, a powerdriven block adapted to draw the wire through said die, a lever controlling the application of power to said block, and a wire gage bearing on said lever between the die and the block and through which the drawn wire passes, whereby when the wire fails to pass through said gage said lever is actuated to release the power from said block.

5. In a wire machine, a die, a power driven block adapted to draw the wire through said die, and a wire gage interposed between said die and block and through which the wire passes, said. gage being to pass through said gage the power is relieved from said block.

6. In a wire machine, a die, a power driven block adapted to draw the wire through said die, a lever controlling the application of power toisaid die, a wire gage interposed between said die and block and through which the drawn wire passes said wire gage being formed by wrapping a length of wire about the drawn wire 01" the desired size and said gage bearing on said lever whereby when the drawn wire fails to pass through said gage said lever is actuated to disconnect the power from said block.

7. In a wire machine, a die, a power driven block adapted to draw the wire through the die, means for disconnecting the power from said block, a forked lever controlling said disconnecting means and protruding in the path of the drawn wire,

and a wire gage bearing against said forked lever through which said drawn wire passes whereby when said drawn wire fails to pass through said gage said lever actuates said disconnecting means.

8. In a wire machine, a die, a power driven block adapted to draw the wire through said die, means for disconnecting the power from said block, a forked lever controlling said disconnecting means and protruding into the path of the drawn wire, and a wire gage formed by wrapping a length of wire about the drawn wire and having protruding portions bearing on said forked lever, the drawn wire passing through said gage whereby when the drawn wire fails to pass through the gage said lever actuates said disconnecting means.

Signed at Pittsburgh, Pa, this 14th day of April, 1919.

JOHN CETNAROWSKI. 

